Ionic + Cordova app not sending JSESSIONID cookie

I'm working on a legacy app at the company I work for. This app is built with Ionic + Cordova + Angular. Thing is that the app isn't sending the JSESSIONID sent by one of the backend services we're using.

We have already implemented in the past an HttpInterceptor that injects withCredentials: true, along with other params the backend requires.

Now this works on Android and Web, but on iOS for some reason isn't working on our Staging server.

Here's our interceptor:

@Injectable({
providedIn: 'root',
})
export class OurHttpAuthHandler extends HttpHandler {
/* ATTRIBUTES */

private authToken$ = of('asd') // some auth token the BE requests. Replaced the actual code just for privacy reasons.

/* LIFECYCLE */

public constructor(private httpHandler: HttpHandler, private auth: AuthService) {
super();
}

/* METHODS */

/**
* Injects the authentication header into all requests.
* @param request The incoming request to handle.
* @returns The response to the request.
*/
public handle(request: HttpRequest<any>): Observable<HttpEvent<any>> {
return this.authToken$.pipe(
take(1),
switchMap((authToken) => {
const modifiedRequest = request.clone({
withCredentials: true,
setHeaders: {
Accept: 'application/json',
Authorization: `Basic ${authToken}`,
'Disable-Payload-Encoding': 'true',
},
});
return this.httpHandler.handle(modifiedRequest);
}),
);
}
}


When I call the POST endpoint in charge of creating a new session, it returns the JSESSIONID cookie for the session. But the subsequent requests seem to ignore it and the withCredentials.

Any thougths?

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